Wick blue-flame burner.



3 SHEETS-SHEET l.

A. J. BLAGKPORD.

WEEK ELUE ELAME EUENEE.

APPLICATION FILED APR.20,1908.

Patented Ma1222, 1910.

gaps? ANDREW s GRAHAM co., FHoToMmoGRAPMw; wAsmNGYON. D. u

Wit emes A. J. BLAGKPORD.

WICK BLUE FLAME BURNER.

APPLICATION FILED APR.20.1908.

Patented M1122, 11910.v

3 SHEETS-SHEET Z.

aww/Moz @items/1g A. J. BLACKPORD. WICK BLUE FLAME BURNER. APPLICATIONFILED APB..20, 1908.

Patented. Manzz, 1910.

3 SHEETS-SHEET 3.

@minuten Wi 1i s1 ma@ FIUFa ATWELL J. BLACKFORD, OF CLEVELAND, OHIO,ASSIGNOR TO AMERICAN STOVE COMPANY, OF S'l". LOUIS, IVIISSOURI.

WICK BLUE-FLAME BURNER.

To all whom t may concern:

Be it known that I, ATWELL J. BLACK- roRn, a citizen of the UnitedStates, residing at Cleveland, in the county of Cuyahoga and State ofOhio, have invented certain new and useful Improvements in IVickBlue-Flame Burners, of which the following is a specification, referencebeing had therein to the accompanying drawing.

This invention relates to improvements in wick blue flame burners, andpertains to that class of blue flame burners in which a blue flame isproduced by restricting the air passages adjacent the wick, and withoutthe use of the well known concentric combustion tubes.

In carrying out the present improvement, I provide a vertically-movableflame converter or deflector which rests upon and moves up and down withthe wick, and is of the general character shown and described in myco-pending application No. 377,057.

One object of my present invention is to hold the iiame at its adjustedheight at any point from maximum to minimum adjustment, and thus preventthe creeping upward of the flame when it is adjusted, by adjustablyincreasing the flow of air through the burner, thereby cooling theburner, and holding the flame at its adjusted height.

Another object of the present invention is to prevent the flashingupward of the flame when the wick and the converter are lowered, byproviding an outlet for the air at the upper end of the burner, andpreventing the sudden lateral forcing of the air against the base of theiiame when the flame converter is lowered with the wick.

There are other constructions having specific objects which will bedescribed hereinaft-er.

In the accompanying drawings, Figure l, is a vertical central sectionalview of a burner embodying my present improvements. Fig'. 2, is a topperspective view of my improved burner with the flame converter removedtherefrom. Fig. 3, is an under detached perspective view of the flameconverter. Fig. 4, is a horizontal sectional view on the line 1 -t ofFig. l. Fig. 5, is a side elevation of the burner showing it in positionon a frame, and the chimney tilted backward for initial lighting.

The present improvement pertains to a Specification of Letters Patent.

Application filed April 20, 1908.

Patented Mar. 22, 1910.

Serial No. 428,107.

wick blue flame oil stove, in which 1 is the wick tube, 2 a surroundingdrum, 3, a chimney, which carries a gallery l surrounding the upper endof the wick, and 5 a flame converter, which is provided with theprojecting flanges a, and c. The flange a projects in the path of thewick 5', and the converter 5 travels up and down with the wick, byreason of the engagement of the wick with the said flange a, as morefully described hereinafter.

One of my present improvements consists in providing the cap 6 of theflame converter with an air passage 7, and in providing the stop member8 with a projecting flange 9 adapted to close the opening 7 againstoutside communication when the wick is at the limit of its adjustment,as shown in Fig. l. As here shown7 this stop diaphragm 9 is of aninverted cup-shape, but I desire it to be understood that its shape maybe varied without materially departing from the present improvement, solong as it performs the function of the closing and opening of the airpassage-way 7.

In operation, when the flame is at maximum height by turning the wick 5to the position shown in Fig. l, the wick is stopped in its upwardmovement by the engagement of the stop diaphragm 9 against the cap 6 ofthe flame converter shown in Fig. l, and the proper amount of air passesthrough the passages l() and around the outside of the flame to maintainit at its maximum adjustment. Then the wick is lowered, however, theflame converter moves downward and an air passage will be formed betweenthe lower edge of the stop diaphragm 9 and the cap 6 of the converter,thus permitting air to flow through the passage 7 below the diaphragmand to the flame. This serves to cause an increased passage of airthrough the burner and tends to cool it, and also feeds an additionalcurrent of air to the flame and serves to cool it. The amount of airpassing through the interior of the burner, and between the diaphragm 9and the cap 6, gradually increases as the wick and converter arelowered, thus increasing the flow of the air through the burner and tothe flame as the flame is lowered. In this Way the amount of air fed tothe flame and the volume passing through the interior of the burner isautomatically regulated and automatically provides the ILD regulatednecessary amount to suit the varied conditions of adjustmentformamtaining the Hame at its adjusted'height.

In practice it is found that it is necessary to furnish more air forcooling the burner to maintain the flame at a very low point, than it isto maintainit at an intermediate or maximum point1 and this automaticmanner of gradually increasing the volume of air as just stated, isfound to meet the required necessities of the burner to maintain theflamevat its adjusted height. Furthermore, in burners of this type,it isfound that when the wick is lowered, thus lowering the converter, thereis a sudden impulse of air currents through the passages 1() to the baseof the flame, and this causes the flame to flash upward. This flashingof the flame is very noticeable in the ordinary operation of the burner,because usually the wick is lowered suddenly.

rIhe construction just describ'ed'for furnishing' increased volumes ot'air to coolthe flame and the burner, also serves to almost, if notwholly eliminate the flashing ofthe flame when the wick is lowered byreason of the fact that the opening of the passage 7 furnishes an escapefoiI the air, and to such an extent as to prevent the sudden forcing ofair currents through the passages 10 sufficiently to cause the flashingVof the flame. By flashing of the flame is meant the creating of a.yellow or. illuminating' flame which appears to flash upward, and isobjectionable.

An annular ring 11 is located in the upperI end or portion of the spacebetween the outer wick tube 12, and the surrounding drum 2. This ring isarranged to form-an air passage 12 between it and the outer wick-tube,and an air passage 13 between the outer edge of the ring and the flange14 of thergallery il. Preferably, the ring is located just below theupper end of the Aouter wick tube 12, and when the chimney 3 is tiltedbackward, as shown in Fig. 5, it leaves the wick 5 exposed forv easyignition, while at the same time the ring limits the volume of air whichpasses upward between the outer wick-tube and the lower flange 1l of thechimney gallery. Suitable supports 15 have their lower ends connected tothe drum 2, and their upper ends carry the ring 11. By

admitting the passage of a limited amount of` air at the inner and outeredges of the ring 11, the proper amount of airis fed to the pointsabove, and the rush ofv a large volume of air is prevented. Thesurrounding drum 2 is removable, and it is desirable that its lower endshould be properly centered, and

that it be parallel withthe outer wick-tube. It is also desirable thatthe volume of air admitted between the drinn and the outer wick-tubeshould be limited. For these purposes an inverted cup-shaped flange 16is suitably connected with supports 17 which rest on the base 18 of theframe 19 in which the burner is supported. This flange serves toposition the lower end of the drum 2, and it is provided with theopenings 20 for admitting air between the drum and the outer wick tube,and these openings are located at points between the slot 21 for thewick adjuster 22 and the slot 23 forV the oil supply 24. The slots 21and 23, together with the openings 20, allow the proper amount of air topass between the drum and the other wick-tube.

I-desire it understoodthat I do not make any claim herein for thosefeatures of the burner which are shown and described in my aforesaid'copending application, as those features are made the subject-matter ofthe claims in that application.

Having thus described my invention, what if' claim and desire to secureby Letters Patent, is

1. In a burner of the character described, the combination with anadjustable wick, of a flame converter adjustable with the vwick andhaving a cap, the said converter having air passages for producing ablue flame, and in addition an air passage in its cap, and means forshutting olf? the flow of air throughthe additional air passage when thewick is raised and vforv permit-ting the flow of air through it as thewick is lowered.`

2. In a burner of the character described, the combination with avertically-adjustable wick, of a flame converter adjustable therewithand provided with a cap, the converter having air passages, and meansfor increasing' the flow of the air through the burner when the wick islowered.

ln an oilburner, the combination with a vertically adjustable wick, of aflame converter vertically adjustable therewith, the converter havingnormally openflame supplying air passages, an additional air passage,and means for shutting off the flow of air through said additional airpassage when the wickis raised but permitting air to flow through itwhen the wick is lowered for the purpose described.

Ll. In an oil burner, the combination with a vapor generator, and meansfor increasing and diminishing the volume of vapor generated'by-thegenerator, of a flame converter upwardly movable as the volume of vaporgenerated is-inereased, the converter having an air` passage supplyingair for the maximum flame, the converter also having an additional airpassage, andl means for shutting off the flow of air through theadditionall air passage during the maximum flame and permitting air toflow through it when the flame isreduced.v

In an oil burner, the combination with a vertically adjustable wick, ofa flame converter. vertically-adjustable with the wick,

the Haine converter provided with air passages, and means for providingan additional air current to the flame when the flame converter islowered.

G. In an oil burner, the combination with a vertically-adjustable wick7of a flame converter movable vertically with the wick, said converterhaving air passages, and means for shutting off the flow of air throughone of the air passages when the converter is raised and for permittingthe flow of air through the said air passage when the converter islowered.

T. In an oil burner, the combination with a vertically adjustable wick,of a flame converter movable vertically with the wick, said converterhaving air passages, and means for shutting oft the flow of air throughone ot the air passages when the converter is raised and for permittinga gradually increased How of air through the said air passage when thewick is lowered.

S. In an oil burner the combination with a vertically-adjustable wick,of a verticallymovable flame converter supported and earred by the wick,the converter having lateral air passages for the flame', and anadditional air passage in its upper end, a stop above and for theconverter, the stop constructed to shut orf the flow of air through theopening in the top of the converter when it is raised and to permit theflow of air through the opening when the converter is lowered.

9. In an oil burner the combination with a vertically-adjustable wick,of a flame converter carried by the wick, the converter havinglaterally-extending air passages and an air passage at its top, a stopfor the converter, the stop having a laterally-extending diaphragmadapted to shut off the iow of air through the top passage when theconverter is raised and to permit air to flow through it when it islowered and to form an additional air passage between the diaphragm andthe converter top.

In testimony whereof I affix my signature in presence of two witnesses.

ATWELL J. BLACKFORD. Iitnesses B. C. HATTURCK, GEORGE Room.

